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2. Pump operation
■ Operation
Operate the pump according to the following steps.
No.
Procedure
Points to be checked
1
Check tubing, wir-
ing and voltage.
●
Check installation, tubing and wiring
are properly done and wiring system
is fused.
●
Check the spec label to see if power
supply voltage is correct.
2
Open valves.
●
Fully open both discharge and suction lines.
3
Supply power to the
pump.
●
Smooth starting may not be obtained
when ambient temperature is 10ºC or
below. In this case, run the pump with
no discharge line pressure for a few
minutes to warm it up.
●
Smooth starting may not be obtained
when the pump chamber is filled with
liquid. Get rid off liquid before operation.
4
Adjust air flow.
●
Provide a running-in period (about 10
minutes) before full scale operation.
●
Always adjust an air flow by a suction
valve.
5
Points to be
checked during
operation
●
After starting, check a pressure gauge
to see if suction and discharge line
pressure are correct and an air flow
meter to see if the specified air flow is
obtained.
●
Keep a suction line pressure at or
below atmospheric pressure.
●
In case electric power has failed while
the pump is running, switch off main
power. Otherwise, the motor may not re-
start or may burn out depending on a line
pressure at the time of power recovery.
Operation
■ Stop and Storage
● Before a long period of stoppage (1 week or more):
Depressurize/empty the pump. Some liquids may harden
or crystallize when they are left for a long time. In this case
clean wet ends before resuming operation.
● Do not store the pump:
• In a flammable/corrosive atmosphere.
• In a dusty/humid environment.
• Where ambient temperature can exceed 0-40°C.
• Under mechanical vibration or wind & rain.
